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LTC4259ACGW General Description

LTC4259ACGW is a high-power PoE (Power over Ethernet) controller manufactured by Linear Technology (now part of Analog Devices). It is designed to provide a complete PoE solution for up to four powered devices in high power applications, such as security cameras, wireless access points, and industrial automation equipment.


Key Features

  • IEEE 802.3af-compliant power over Ethernet
  • Supports high power applications up to 25.5 W per port
  • Integrated DC/DC converter with high efficiency and low EMI
  • Adjustable current limit and thermal shutdown protection
  • Programmable inrush current limiting for hot-swap applications
  • 16-lead SSOP package


  • IP telephones
  • Wireless access points
  • Security cameras
  • Industrial automation equipment
  • Building automation systems
  • Medical equipment


feature-type PSE Controller feature-standard-supported IEEE802.3af
feature-process-technology feature-minimum-input-voltage-v
feature-maximum-input-voltage-v feature-maximum-current-limit-ma
feature-typical-inrush-current-ma feature-maximum-output-power-w
feature-maximum-oscillating-frequency-hz feature-maximum-duty-cycle-
feature-programmability Yes feature-packaging
feature-pin-count 36 feature-supplier-package SSOP W
feature-standard-package-name1 SOP feature-cecc-qualified No
feature-esd-protection feature-military No
feature-aec-qualified No feature-auto-motive No
feature-p-pap No feature-eccn-code EAR99
feature-svhc Yes


Shipping Method

Our products are mainly transported and delivered by DHL, FedEx, UPS and other logistics partners on site -- Available to 200+ countries.

Delivery Time

The delivery time is usually within 2-7 days, depending on the logistics provider and the area of delivery.

The following are the estimated delivery times of some logistics service providers.

  • DHL

  • Fedex

  • UPS

  • EMS

  • Registered Air Mail


We accept TT prepayment (bank transfer), paypal, credit cards, Western Union, Money Gram.

Checks and other instruments are not supported to pay for orders and customers are required to pay all possible fees, including sales tax,
customs fees, etc.

  • Wire Transfer

  • Paypal

  • Credit Card

  • Western Union

  • Money Gram


Our policies and procedures are designed to ensure compliance with various quality specifications and to quickly resolve quality-related issues.

We promise to provide 365 days quality assurance service for all our products.

If you have any dissatisfaction with the quality of the product you received, you can contact us for a refund or exchange, as long as the product is kept in its original condition.


AVAQ determines and packages all devices based on electrostatic discharge (ESD) and moisture sensitivity level (MSL) protection requirements.
  • ESD


  • Tape and Reel

    Tape and Reel

  • Cut Tape

    Cut Tape

  • Tube or Tray

    Tube or Tray

Ratings and Reviews

J**b Nov 20, 2020

Thanks for the LED and the fast Delivery.

W**t Jul 03, 2020

It came quickly. Well packed. Soldering quality at height. Until i checked.

R**o May 14, 2020

son de buena calidad

J**a Jun 11, 2019

Delivery is very fast, ordered on may 27th-received on june 7th. Very high quality soldering. Block as in the photo in advertising, one in one. I haven't tried it yet, but i think it's good. If anything is wrong, i will.



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Buying Guide

  • What is the lifespan of LTC4259ACGW?

    The lifespan of LTC4259ACGW depends on various factors such as the quality of materials used, operating conditions, and the manufacturer's recommended usage time. The datasheet provided by the manufacturer specifies the expected lifespan of the product.

  • Where can I find the full specification of LTC4259ACGW?

    You can find it with PDF Datasheet for LTC4259ACGW on this page. If it is not available, you can contact Avaq at [email protected] to inquire about the Datasheet for this part.

  • How to check the quality of LTC4259ACGW?

    Avaq has separate quality services with common quality inspection equipment for testing items, you can also fill out a sample form, our team will get in touch with you within 24 HOURS.

  • Can I purchase samples for testing?

    Avaq offers free samples for customers to test. This can often help you determine whether the chip or component meets your needs.

  • Where can I check the delivery after the order is completed?

    Once the order is completed, you will receive an order confirmation email containing a tracking number from AVAQ, then you can track the delivery by yourself.

  • Where to view my order of LTC4259ACGW or my history order record?

    You could view all of your orders by logging in or registering AVAQ account. Log in or Register an account now.